15mm magnetic balls have extra strong pulling force. Unlike 5mm magnetic balls wholesale magnets, you can not separate such strong sphere magnets easily if there are no plastic spacers between each other.15mm magnetic balls are usually made of N35 grade, and plated with chromium or nickel. You have to handle strong magnetic balls with care. If two strong magnetic balls collide, the great impact force at the collision point will make the plating layer fall off. Strong magnetic balls are definitely not toys for children! Other grades and electroplating can be customized. (More customization info at: custom neodymium magnets)
Remanence (Br): 15mm magnetic balls of N35 have remanence range of 11700-12200 Gs.
Coercivity (Hcj): ≥955 KA/m.
Magnetic Energy Product (BHmax): The BHmax range of N35 sphere magnets wholesale is 33-36 MGOe.
Max.Working Temp.: 15mm magnetic balls work at temperatures below 80℃.
Coating Available: 15mm magnetic balls are plated with Nickel, Cr, Ag and Au.
Our 15mm magnetic balls are made of high-quality neodymium iron boron (NdFeB) material, which is known for its excellent magnetic properties and durability. The surface of each magnetic ball is treated with three layers of nickel-copper-nickel plating. This multi-layer plating not only enhances the corrosion resistance of the magnetic ball, but also improves its anti-oxidation performance. We use precision CNC processing technology to ensure that the diameter error of each magnetic ball is controlled within ±0.05mm, thereby ensuring the consistency and stability of the magnetic ball. The surface of the magnetic ball is polished to make it smoother and reduce the wear caused by friction during use. Our 15mm magnetic balls can maintain stable magnetic properties even in high temperature environments, and have undergone rigorous high-temperature aging tests to ensure that they can still work normally in environments up to 80 degrees Celsius. Each batch of 15mm magnetic balls undergoes rigorous salt spray testing before leaving the factory to ensure that they still perform well in humid and corrosive environments.
Category | Ball Magnet |
Material | Sintered NdFeB |
Grade | N35 |
Dimension | 15mm |
Magnetized | Axially(poles at two points) |
Coating | NiCuNi |
Strength | approx. 3.4 kg |
Weight(1 piece) | 16g |
Tolerance | +/-0.05mm |
Max.Working Temp. | 80℃ |
lf you have any questions, you can contact us to help you solve them.